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Class 10 Mathematics Pair of Linear Equations in Two Variables Algebraic methods: Substitution method and Elimination method.Hard

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What is the value of (x-y) from (\frac{x+3y}{4}=9) and (\frac{2x-y}{3}=5)?

Answer and explanation

Correct answer: (3)

The equations become (x+3y=36) and (2x-y=15). The solution is (x=\frac{81}{7},\ y=\frac{57}{7}), so (x-y=\frac{24}{7}), hence no option is correct.

Related tags

Linear Equations Transformed Equations Expression Value Hard Class 10 Algebraic Methods: Substitution Method And Elimination Method.Algebraic Methods Substitution Method And Elimination Method Pair Of Linear Equations In Two Variables

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